US3908594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marking apparatus
Assignee: Fujifilm Holdings Corp
•
Filing: 1973-03-30
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Granted: 1975-09-30
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Expires: 1993-03-30
Abstract
Abstract A marking apparatus for a material to be marked with an electrophotosensitive layer comprises means for feeding the material, a developing roller having a resilient, nonconductive surface layer, said roller being so mounted as to contact only with the material, and a suction means for sucking an excessive developer after developing with a time interval necessary for acccomplishing developing operation.
Inventors
- 👤 Seiji Matsumoto
- 👤 Satoru Honjo
- 👤 Kazuhiro Kawaziri
- 👤 Sigeru Tezuka
- 👤 Etuo Shiozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:03
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
152 words
In apparatus for marking a metallic plate having a surface electrophotosensitive layer theron by charging said layer, image exposing to form a latent image, and developing said latent image, the improvement of a conveyor belt for feeding said metallic plate disposed on one side thereof, a developing roller disposed on the other side of said metallic plate and directly opposite to at least a portion of said conveyor belt having a porous, sponge like, non-conductive surface layer, said roller being so mounted as not to contact said conveyor belt but to contact said electrophotosensitive layer of the metallic plate with at least the under side of the sponge like surface layer, said sponge like surface containing a liquid developer for effecting said developing as it is squeezed against said electrophotosensitive layer and suction means for removing excessive developer from said metallic plate after a time lag necessary to complete the developing operation.
Claim 2
Dependent Claim
152 words
In apparatus for marking a metallic plate having a surface electrophotosensitive layer theron by charging said layer, image exposing to form a latent image, and developing said latent image, the improvement of a conveyor belt for feeding said metallic plate disposed on one side thereof, a developing roller disposed on the other side of said metallic plate and directly opposite to at least a portion of said conveyor belt having a porous, sponge like, non-conductive surface layer, said roller being so mounted as not to contact said conveyor belt but to contact said electrophotosensitive layer of the metallic plate with at least the under side of the sponge like surface layer, said sponge like surface containing a liquid developer for effecting said developing as it is squeezed against said electrophotosensitive layer and suction means for removing excessive developer from said metallic plate after a time lag necessary to complete the developing operation.
Claim 3
Dependent Claim
15 words
The improvement in claim 1 where said image to be developed is a line image.
Claim 4
Dependent Claim
32 words
The improvement of claim 1 where said developing roller has a diameter of 2.5-40 cm, and includes a solid core covered with said sponge like layer having a thickness of 0.5-10 cm.
Claim 5
Dependent Claim
27 words
The improvement as in claim 1 where the bubbles contained in said sponge like layer have a diameter in the range of 50 to 900 Mu .
Claim 6
Dependent Claim
20 words
The improvement as in claim 1 including means for supplying developer directly onto the surface of the sponge like layer.
Claim 7
Dependent Claim
33 words
The improvement as in claim 1 where the suction means comprises a suction roller having a core and a resilient, porous layer mounted thereon, which is pressed against the material to be marked.
Claim 8
Dependent Claim
17 words
The improvement as in claim 6 where the outside diameter of said suction roller is 2.5-40 cm.
Claim 9
Dependent Claim
35 words
The improvement as in claim 6 where said suction means includes a suction nozzle to absorb the developer contained in the suction roller layer, said nozzle being pressed against the surface of the porous layer.
Claim 10
Dependent Claim
24 words
The improvement as in claim 8 including a roller rotatably mounted within said suction nozzle for squeezing the developer in said suction roller layer.
Claim 11
Dependent Claim
37 words
The improvement as in claim 1 including means for insuring that said material to be marked is greater in thickness than the radial compression of said sponge like layer as the latter squeezes against said electrophotosensitive layer.
Claim 12
Dependent Claim
33 words
The improvement as in claim 1 where said material to be marked is greater in thickness than the radial compression of said sponge like layer as The latter squeezes against said electrophotosensitive layer.
Claim 13
Dependent Claim
20 words
The improvement as in claim 1 where said sponge like layer contains about 0.1 to 0.8 c.c./cm3 of said developer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |